Incandescent gas-burner.



No. 641,078. Patented Ian. 9, I900,

W. R. CLAY.

INCANDESCENT GAS BURNER.

} (Applimtinn filed Aug. 21, 1899.) (No model.

v ginmff. WITNESSES: )f a M $45k er UNITED STATES PAT NT QFFICE.

IVILLIAM RICHARD CLAY, OF BOLTON, ENGLAND.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 641,078, dated January 9, 1900.

Application filed August 21,1899. Serial No. 727,995. (No model.)

To (tZZ whom it may concern:

Be it known that I, WILLIAM RICHARD CLAY, a subject of the Queen of Great Britain and Ireland, residing at Bolton, in the county of Lancaster, England, have invented certain new and useful Improvements in Incandescent Gas-Burners, (for which I have made application for a patent in Great Britain, No. 27,416, dated December 29, 1898,) of which the following is a specification.

This invention has for its object an improved device for use in connection with one modification of the incandescent gas-burner for which I obtained a United States patent, No. 617,459, dated January 10, 1899.

I have found when using the form of incandescent gas-burner in which air is admitted at more than one position-such, for instance, as that illustrated by Figure 6 of the specification of my aforesaid patent-that a better Bunsen flame may be obtained if the secondary air-supply is dispensed with. I have devised the present invention with the object of cutting off this secondary air-supply, and without in any way detracting from the efficaoy of my incandescent gas-burner as an antivibratory device I obtain a greater stability thereof.

Referring to the drawings which form a part of this specification, Fig. 1 illustrates the application of my invention to an incandescent gas-burner of the above-mentioned type carrying a conical burner top. Fig. 2 illustrates the application of my invention to an incandescent gas-burner of the same type, but carrying a burner-top of ordinary construction. Fig. 3 is a view of a modified detail.

Similar letters of reference indicate similar parts'throughout the several views.

A is the tubular member or body surrounding the Bunsentube, hereinafter referred to as the tubular member and which carries a burner-top B.

O is a conical spiral spring which surrounds and is carried by the upper half of the Bunsen tube D and serves as a resilient bearing for the tubular member A. The Bunsen tube D is provided with a gas-nipple D, orifices D for the admission of air, and the usual internal screw for attachment to the gas-fixture.

In Fig. 1 I have shown radially-disposed fiat springdegs E, which are placed below the spiral spring 0, so as to check undue movement of the lower part of the tubular member A. As shown, these spring-legs may be formed in one piece of sheet metal, their junction at the top forming an abutment upon which the lower end of the spiral spring 0 .rests.

In Fig. 2 I have shown an alternative arrangement in which the spring-legs are re placed by a conical spiral spring 0, which may be formed in one with the conical spiral spring 0, carrying the tubular member, or separate therefrom.

In Fig.3 I have shown another alternative for the lower spring-via, a flat helical spring.

The Bunsen tube D- passes through the neck of the tubular member A, so as to permit of free lateral play. F is a ring formed of a durable metal or alloy, such as gun-metal, which I have found to give a very good result, or of other suitable substance, which snugly fits over the upper end of the Bunsen tube D, so as to permit of free vertical movement of the Bunsen tube in the metal ring and is of larger outside diameter than the hole in the neck of the tubular member. The neck of the tubular memberA is provided with a surface G, upon which the metal ring F slides when a side movement of the tubular member takes place. The sides of the orifice in the metal ring F are rounded off, so as to permit of a certain amount of movement of the metal ring F on the Bunsen tube D.

. In Fig. l the burner-top B is shown of a conical shape and removable from the tubular member A. It may be clamped to the tubular member by means of a screw 11; but any other suitable means of attachment may be used. The coned burner-top is adapted to constitute a recess B for protecting the mantle from the effects of air-currents. The in- It is carried by a sleeve B screwing into a dished plate B which is adapted to screw onto the tubular member.

In the case of both Figs. 1 and 2 it will be noticed that the arrangement is such that the metal ring F is provided with a recess or chamber in which to reciprocate.

The mantle can be suspended from a stem supported at the center of the burner-top or in any other manner, as will be Well understood by persons versed in the art to which my invention appertains. It will also be ob- Vious to such persons that the particular contour of the tubular member, the formation and arrangement of the springs, and other details of construction may be varied.

By the above-described arrangement of slid- .ing ring mounted on the Bunsen tube a durable and effectual means is provided of cutting off the secondary air-supply, by Which I obtain a better and more perfect Bunsen flame than Where a secondary air-supply is used,

and I also obtain greater stability Without detracting from the efficacy of my incandescent gas-burner as an antivibratory' device.

Having now described my invention, What I claim as new, and desire to secure by Letters Patent, is

In an incandescent gas-burner, a tubular member carryinga burner-top, a Bunsen tube located centrally Within the tubular member, a spring supporting the tubular member and carried by the Bunsen tube, a metal or other suitable ring snugly fitting the Bunsen tube and of larger outside diameter than the hole in the neck of the tubular member and capable of sliding motion upon said neck, substantially as described herein.

In Witness whereof I have hereunto set my hand in presence of two Witnesses.

WILLIAM RICHARD CLAY. WVitnesses:

CHARLES FLETCHER ENNIS, J OHN DANIEL CLAY. 

